[vdr] Re: how to split vdr file after a given time?

[Matthias Bodenbinder <matthias@bodenbinder.de>]

On Monday 12 January 2004 08:31, Patrick Cernko wrote:
> Also sprach Matthias Bodenbinder zu "10.01.2004 20:08" Anno Domini:
> > On Friday 09 January 2004 13:28, Patrick Cernko wrote:
> >>Also sprach Matthias Bodenbinder zu "09.01.2004 13:00" Anno Domini:
> >>>Hello,
> >>>
> >>>I have a recording which consists of three vdr files.
> >>>How do I split the file 002.vdr after 3778.584 sec (suggested by
> >>>vdrsync.pl, see log below)? I am looking for a solution for Linux.
> >>
> >>I recently had the same problem. My solution was, to demux the audio and
> >>video with X08 instead (http://members.aon.at/johann.langhofer/x08.htm).
> >>Afterwards I used mpg123 and mp2enc to reencode the audio as a pure
> >>stereo one for muxing:
> >>
> >>mpg123 -w - --stereo 001.mp2 | mp2enc -b 192 -s 48000 -s -o 001.mpa
> >>
> >>After that, you can multiplex the audio&video as usual with tcmplex!
> >>Oh, mp2enc is from the MJPEG tools package from sourceforge!
> >>
> >>CU
> >
> > Hello Patrick,
> >
> > many thanks! This was exactly what I was looking for. I tried X08 and it
> > works perfectly. I didnt even need to use mpg123 afterwards. mplex  -f 8
> > did the job right away.
>
> Ok, but did you test the resulting DVD in different software and
> hardware DVD players if it is still playable? I do not have much faith
> in the stability and capabities of the most hardware DVD player's MPEG
> audio decoding engines. Normally they a seldom needed as mos DVDs come
> with AC3 audio. I'm not sure if they can handly in-stream changes
> between mono and stereo. I'm also quiet sure, this is not included in
> the DVD specs.
>
> So where did you tested it!

The mono->stereo->mono switch takes place in less than a second (according to 
X08 log output). It seems that there are just a few frames in stereo in the 
middle of a mono recording.

I tested it with a Samsung M205 DVD Player as well as the new ALDI Medion DVD 
Player. Absolutely no problems so far.

Matthias



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